Thermodynamics ...

The enthalpy of dissolution of BaCl₂(s) and BaCl₂. 2 H₂O (s) are -20.6 and 8.8 kJ mol^-1 respectively. The enthalpy of hydration for BaCl₂(s) + 2 H₂O → BaCl₂.2H₂O (s) is

The heats of combustion of rhombic and monoclinic Sulphur are respectively 70960 and 71030 calories. What will be the heat of conversion of rhombic Sulphur to monoclinic?

The enthalpies of formation of N₂O and NO are 82 and 90 kJ/ mole respectively.The enthalpy of the reaction 2N₂O(g) + O₂(g) → 4NO(g) is equal to

Based on the following thermochemical equations

The standard heat of formation in kcal/mole of NO₂ (g) and N₂O₄(g) are 8.0 and 2.0 respectively. The heat of dimerisation of NO₂ i.e. for 2 NO₂ (g) N₂O₄(g) in kcal is

The enthalpy of vaporization of liquid water using the data

The enthalpy changes at 298 K in successive breaking of O-H bonds of HOH are

The bond energy of an O-H bond is 109 kcal mol^-1. When a mole of water is formed

One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 litre to 10 litres. The ∆E for this process is (R = 2 cal mol^-1 K^-1)